From ec94b828fe29a51c5fc4afa542e3f4430d2e238b Mon Sep 17 00:00:00 2001
From: Nathan Harold <nharold@google.com>
Date: Thu, 25 May 2017 16:10:35 -0700
Subject: Keepalive RIL Interface

Interface definition for requesting and managing
keepalive packet offload to the modem.

Bug: 33277538
Test: tbd
Change-Id: Id42b8802750ca376d1d50431dec670f25c607174
(cherry picked from commit 6942b212a92d9d05a8100306acf9ea855818eb8d)
---
 include/telephony/ril.h | 74 +++++++++++++++++++++++++++++++++++++++++++++++++
 libril/ril_service.cpp  | 16 +++++++++++
 2 files changed, 90 insertions(+)

diff --git a/include/telephony/ril.h b/include/telephony/ril.h
index 277878a..b65b2f6 100644
--- a/include/telephony/ril.h
+++ b/include/telephony/ril.h
@@ -5766,6 +5766,43 @@ typedef struct {
  */
 #define RIL_REQUEST_STOP_NETWORK_SCAN 143
 
+/**
+ * RIL_REQUEST_START_KEEPALIVE
+ *
+ * Start a keepalive session
+ *
+ * Request that the modem begin sending keepalive packets on a particular
+ * data call, with a specified source, destination, and format.
+ *
+ * "data" is a const RIL_RequestKeepalive
+ * "response" is RIL_KeepaliveStatus with a valid "handle"
+ *
+ * Valid errors:
+ *  SUCCESS
+ *  NO_RESOURCES
+ *  INVALID_ARGUMENTS
+ *
+ */
+#define RIL_REQUEST_START_KEEPALIVE 144
+
+/**
+ * RIL_REQUEST_STOP_KEEPALIVE
+ *
+ * Stops an ongoing keepalive session
+ *
+ * Requests that a keepalive session with the given handle be stopped.
+ * there is no parameter for this request.
+ *
+ * "data" is an integer handle
+ * "response" is NULL
+ *
+ * Valid errors:
+ *  SUCCESS
+ *  INVALID_ARGUMENTS
+ *
+ */
+#define RIL_REQUEST_STOP_KEEPALIVE 145
+
 /***********************************************************************/
 
 /**
@@ -6442,6 +6479,14 @@ typedef struct {
  */
 #define RIL_UNSOL_NETWORK_SCAN_RESULT 1049
 
+/**
+ * RIL_UNSOL_KEEPALIVE_STATUS
+ *
+ * "data" is NULL
+ * "response" is a const RIL_KeepaliveStatus *
+ */
+#define RIL_UNSOL_KEEPALIVE_STATUS 1050
+
 /***********************************************************************/
 
 
@@ -6602,6 +6647,35 @@ typedef struct {
                                    loosely defined in LTE Layer 3 spec 24.008 */
 } RIL_PCO_Data;
 
+typedef enum {
+    NATT_IPV4 = 0,              /* Keepalive specified by RFC 3948 Sec. 2.3 using IPv4 */
+    NATT_IPV6 = 1               /* Keepalive specified by RFC 3948 Sec. 2.3 using IPv6 */
+} RIL_KeepaliveType;
+
+#define MAX_INADDR_LEN 16
+typedef struct {
+    RIL_KeepaliveType type;                  /* Type of keepalive packet */
+    char sourceAddress[MAX_INADDR_LEN];      /* Source address in network-byte order */
+    int sourcePort;                          /* Source port if applicable, or 0x7FFFFFFF;
+                                                the maximum value is 65535 */
+    char destinationAddress[MAX_INADDR_LEN]; /* Destination address in network-byte order */
+    int destinationPort;                     /* Destination port if applicable or 0x7FFFFFFF;
+                                                the maximum value is 65535 */
+    int maxKeepaliveIntervalMillis;          /* Maximum milliseconds between two packets */
+    int cid;                                 /* Context ID, uniquely identifies this call */
+} RIL_KeepaliveRequest;
+
+typedef enum {
+    KEEPALIVE_ACTIVE,                       /* Keepalive session is active */
+    KEEPALIVE_INACTIVE,                     /* Keepalive session is inactive */
+    KEEPALIVE_PENDING                       /* Keepalive session status not available */
+} RIL_KeepaliveStatusCode;
+
+typedef struct {
+    uint32_t sessionHandle;
+    RIL_KeepaliveStatusCode code;
+} RIL_KeepaliveStatus;
+
 #ifdef RIL_SHLIB
 struct RIL_Env {
     /**
diff --git a/libril/ril_service.cpp b/libril/ril_service.cpp
index a8bf9de..a6baf3c 100644
--- a/libril/ril_service.cpp
+++ b/libril/ril_service.cpp
@@ -42,6 +42,7 @@ using ::android::hardware::hidl_string;
 using ::android::hardware::hidl_vec;
 using ::android::hardware::hidl_array;
 using ::android::hardware::radio::V1_1::NetworkScanRequest;
+using ::android::hardware::radio::V1_1::KeepaliveRequest;
 using ::android::hardware::Void;
 using android::CommandInfo;
 using android::RequestInfo;
@@ -439,6 +440,10 @@ struct RadioImpl : public V1_1::IRadio {
 
     Return<void> setIndicationFilter(int32_t serial, int32_t indicationFilter);
 
+    Return<void> startKeepalive(int32_t serial, const KeepaliveRequest& keepalive);
+
+    Return<void> stopKeepalive(int32_t serial, int32_t sessionHandle);
+
     Return<void> setSimCardPower(int32_t serial, bool powerUp);
     Return<void> setSimCardPower_1_1(int32_t serial,
             const V1_1::CardPowerState state);
@@ -2814,6 +2819,17 @@ Return<void> RadioImpl::setCarrierInfoForImsiEncryption(int32_t serial,
     return Void();
 }
 
+Return<void> RadioImpl::startKeepalive(int32_t serial, const KeepaliveRequest& keepalive) {
+    RLOGD("startKeepalive: serial %d", serial);
+    return Void();
+}
+
+Return<void> RadioImpl::stopKeepalive(int32_t serial, int32_t sessionHandle) {
+    RLOGD("stopKeepalive: serial %d", serial);
+    return Void();
+}
+
+
 /***************************************************************************************************
  * RESPONSE FUNCTIONS
  * Functions above are used for requests going from framework to vendor code. The ones below are
-- 
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